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Finding the Fourth Proportional to 28,876.60, 43,314.90 and 17,747.20

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Solution

The fourth proportional to 28,876.60, 43,314.90 and 17,747.20 is: 26,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.60 : 43,314.90 = 17,747.20 : x
  2. Step 2: Convert to fraction form
    28,876.60/43,314.90 = 17,747.20/x
  3. Step 3: Cross multiply
    28,876.60x = 43,314.90 × 17,747.20
  4. Step 4: Simplify right side
    28,876.60x = 768,718,193.28
  5. Step 5: Solve for x
    x = 768,718,193.28/28,876.60
  6. Step 6: Final answer
    x = 26,620.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.